The British Journal of Radiology, Vol 68, Issue 814 1058-1060, Copyright © 1995 by British Institute of Radiology

ARTICLES

Computed tomography manifestations of tricuspid regurgitation

MA Collins, JW Pidgeon and R Fitzgerald
Department of Radiology, New Cross Hospital, Wolverhampton, UK.

Six patients undergoing dynamic contrast enhanced abdominal computed tomography (CT) for upper abdominal symptoms and signs are described. Each patient demonstrated early, intense opacification of the inferior vena cava (IVC) and hepatic veins, exceeding that in the aorta on scans through the upper abdomen. Opacification of the IVC returned to normal on more caudal slices. All six patients were found to have echocardiographically proven tricuspid regurgitation (TR). It is suggested that this sign occurs in patients with TR due to direct reflux of contrast from the right atrium into the IVC during protracted bolus injection. Additional CT findings included patchy parenchymal liver enhancement in four patients and ascites in five. Recognition of this simple sign may direct the clinician to a cardiac aetiology for upper abdominal symptoms and signs.

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